Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||
| Equity | — |
568, 4
SEK
|
4 8 3,8
SEK
|
51, 4
SEK
|
— | — | — |
3 0,7
SEK
|
— |
25,000,000
SEK
|
50 0,0
SEK
|
— | — | — |
5 9,0
SEK
|
— |
17,000,000
SEK
|
436, 9
SEK
|
24,000,000
SEK
|
— |
4 32,5
SEK
|
3 3, 2
SEK
|
46 9, 8
SEK
|
1, 7
SEK
|
24,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) |
66, 9
SEK
|
— | — | — |
669,000,000
SEK
|
–
SEK
|
–
SEK
|
— |
–
SEK
|
— | — |
–
SEK
|
34, 4
SEK
|
344,000,000
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
— | — | — | — | — |
| Comprehensive income |
59, 3
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
60, 2
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
200,000,000
SEK
|
— | — | — |
200,000,000
SEK
|
–
SEK
|
–
SEK
|
— |
–
SEK
|
— | — |
–
SEK
|
3 0,0
SEK
|
300,000,000
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
— | — | — | — | — |
| Increase (decrease) through other changes, equity |
29, 2
SEK
|
— | — | — |
-
SEK
|
2 9 ,1
SEK
|
-
SEK
|
— |
0 ,1
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
55 9, 3
SEK
|
— | — | — |
503, 8
SEK
|
1, 7
SEK
|
51, 4
SEK
|
— |
24,000,000
SEK
|
— | — |
24,000,000
SEK
|
53 0,0
SEK
|
4,669,000,000
SEK
|
— |
59, 0
SEK
|
— | — | — |
1, 7
SEK
|
— | — | — | — | — |